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Eight-shaped polarization-dependent electromagnetic bandgap structure and its application as polarization reflector

Published online by Cambridge University Press:  03 March 2021

Priyanka Dalal*
Affiliation:
Department of Electronics and Communication Engineering, Guru Jambheshwar University of Science and Technology, Hisar, Haryana, India
Sanjeev Kumar Dhull
Affiliation:
Department of Electronics and Communication Engineering, Guru Jambheshwar University of Science and Technology, Hisar, Haryana, India
*
Author for correspondence: Priyanka Dalal, E-mail: priyanka.dalal17@gmail.com

Abstract

In this paper, an eight-shaped polarization-dependent electromagnetic bandgap (ES-PDEBG) structure is proposed. The unit cell of ES-PDEBG structure consists of an outer eight-shaped EBG patch with two inner square patches and three vias. Surface wave bandgap and reflection phase characteristics have been studied for the proposed structure. From the measurement results, two surface wave bandgaps with center frequencies 3.42 and 5.88 GHz are observed along the X-direction, and one surface wave bandgap with center frequency 3.69 GHz is observed along the Y-direction. The refection phase bandgap of the proposed structure is centered at 5.61 and 3.31 GHz for x- and y-polarized incident plane waves, respectively. Furthermore, the application of the proposed structure as polarization reflector is presented. The study demonstrates that the structure can act as dual-band in-polarization reflector for circularly polarized waves. In addition, incident linearly polarized waves are reflected as circularly polarized waves in four operating bands.

Type
Metamaterials and Photonic Bandgap Structures
Copyright
Copyright © The Author(s), 2021. Published by Cambridge University Press in association with the European Microwave Association

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